Correct Solution Fast. 25 kg of water, initially at 40 ° C and 1 bar, occupying 0.06 m3 undergoes a process in which it attains a final state of 100 ° C and 300 bar. Assume that under these conditions the water can be treated as an incompressible fluid with specific heat, c(T) = 0.003 kJ/kg.K^2 + 7.38 kJ/kgK. Determine Delta H in KJ.

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Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.